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Well the fade is an implementation of the wtrig() functions and there is no equivalent attack function, so it might be possible by constantly updating the gain from 0 to full over a period of time, but it's not something I intend to persue. Plus the attack control will need to be read by the analog inputs and I don't think any are spare.

Thanks Craig! That makes sense, particularly for f there aren’t slots left…how about MiDi CC #73 (attack on), do you think that would do?

@@SMMPUK nothing

@@SMMPUK everything is powered from +12v using the onboard regulators for an UNO etc. I don't have anything but the schematics and code. The samples just fit in the 35 note range, I could resample them for the whole keyboard but that's time consuming and the war is still raging here. I fitted an SD card expansion cable to access the SD card to change samples etc but never did any more to it.

@@craigyjp HI Craig, thanks for your info! I hope things get better and that the war might end soon...thanks again!

@@Rhythmattica I used to sell them when new, I didn't really think that much of them, but now I realise how powerful they actually are.

@@craigyjp That was Wish I hadn't... I always loved the sound, it was somewhat to me , sort of like the Korg Poly800.. so much potential, held back by its editing design faults.... But damn.. always loved the displays......gave it somewhat its personality .........

VX800 next! ​@@craigyjp

Glad you like them, I think it has come to an end now and the AX-80 will go into storage until the war is over.

Truly

​@@craigyjpwould you ever build to sell an Akai FMX-008M 8MB Internal memory for MPC 2000XL . Mine was stolen. Dyin to get one and it looks simple enough but I'm not great with a soldering iron

Sorry I don't have an mpc to build and test one with or schematics for one. I only build things for my use and publish so others can build if they want.

Glad you like it

Thank you! Cheers!

You are so welcome

@@joostvoorspaamm9304 sorry I don't have an ax-60 to test on

It takes my mind off the missiles and drones

@@chelikan thanks, I have done enough to rebuild the VFD displays with my design, just chose a different sized display

@@tdrelectronics766 The synth schematics are available online, I used them for nearly everything, although there are some errors which I worked out by following the PCB traces in the service manual. The AX-80 displays I have published to my GitHub pages as usual. Username craigyjp

Not really ,this project is around a year old, I have not got the time to revisit to make videos and certainly not for other synths I don't own. The poly800 doesn't even support editing over midi, so that's a non starter. Plus I live in a war zone so my time is limited.

@@craigyjp Sorry to hear this, Do you still have the time to fix synths?

@@jarekkotek2719 occasionally, most of my stuff is stored away until the war ends, I build stuff to keep me busy and take my mind off the missiles and drones

@@craigyjp What stuff do you build, so when the war is over, maybe I can order something from you, or maybe sooner? I hope war will end soon..

@@jarekkotek2719 all sorts of things, I have built several editors based on the same technology as this one, CS80V editor, dw6000, Plus many polysynths and mono synths, vst builds etc, nearly everything is on my channel

@@rlgrlg-oh6cc might have a very long wait

@@waheex not just amplify, also invert voltages. Obviously everything needs to be 0-5v for the ENVGen8C chips, so measure what is currently used for the existing ADSR voltages and calculate with opamps what you need to convert them to 0-5v, the sustain voltage may already be 0-5v.

It's not really, most of the work went into making wiring harnesses, the rest is boards off ebay and some work of my own. I have a Poly61 keyboard so it removes the need for this keyboard and makes room for something else not available in rack form. I'm retired so I have time to do these things, plus its a much improved Poly61 with MIDI, extra LFO, MIDI sync of the Arp, control changes for parameters, higher resolution of parameters, program changes etc.

Thanks, no, I'm based in Ukraine, Sheffield is a long way to drive.

@@craigyjp I see, that's a shame. I wish you all the best with your synth. Will you be putting it back in the original case to resemble the original synth.

no, this poly61 never had an original case and keyboard as it's made up of second hand parts from eBay and home made bits, I have a poly61, so this can be an expander for 12 voices or a standalone synth.

@@M0UAW_IO83 I don't have any problems yet, I have built many different designs and they are all clean

@@RommudohDev I have various schematics from various projects, I breadboard a single DCO for this current design and built the board to the right. I then needed a controller for it and I made a layout for the board on the left. I have built around 5 or 6 of this type of controller so yes I sort of know it well enough, but I still refer to previous schematics whilst making improvements on the fly, if you saw some of my earlier controllers you would see how over complicated they were compared to this one. It's amazing what you learn over the years.

But to answer your question there is no specific schematic for any of this project at the moment.